Table of contents : Cover Back Cover Title Preface Contents Four Engaging Problems A Problem from the 1991 Asian Pacific Olympiad Four Problems from the First Round of the 1988 Spanish Olympiad Problem K797 from Kvant An Unused Problem from the 1990 International Olympiad A Problem from the 1990 Nordic Olympiad Three Problems from the 1991 AIME An Elementary Inequality Six Geometry Problems Two Problems from the 1989 Swedish Olympiad Two Problems from the 1989 Austrian-Polish Mathematics Competition Two Problems from the 1990 Australian Olympiad Problem 1367 from Crux Mathematicorum Three Problems from Japan Two Problems from the 1990 Canadian Olympiad A Problem from the 1989 U. S. A. Olympiad A Problem on Seating Rearrangements Three Problems from the 1980 and 1981 Chinese New Year's Contests A Problem in Arithmetic A Checkerboard Problem Two Problems from the 1990 Asian Pacific Olympiad Four Problems from the 1989 AIME Five Unused Problems from the 1989 International Olympiad Five Problems from the 1980 All-Union Russian Olympiad The Fundamental Theorem of 3-Bar Motion Three Problems from the 1989 Austrian Olympiad Three Problems from the Tournament of the Towns Competitions Problem 1506 from Crux Mathematicorum Three Unused Problems from the 1987 International Olympiad Two Problems from the 1981 Leningrad High School Olympiad Four Problems from the Pi Mu Epsilon Journal—Fall 1992 An Elegant Solution to Morsel 26 Two Euclidean Problems from The Netherlands Two Problems from the 1989 Singapore Mathematical Society Interschool Competitions Problem M1046 from Kvant (1987) Two Theorems on Convex Figures The Infinite Checkerboard Two Problems from the 1986 Swedish Mathematical Competition A Brilliant 1-1 Correspondence The Steiner-Lehmus Problem Revisited Two Problems from the 1987 Bulgarian Olympiad A Problem from the 1987 Hungarian National Olympiad A Problem from the 1987 Canadian Olympiad Problem 1123 from Crux Mathematicorum A Problem from the 1987 AIME A Generalization of Old Morsel 3 Two Problems from the 1991 Canadian Olympiad An Old Chestnut A Combinatorial Discontinuity A Surprising Theorem of Kummer A Combinatorial Problem in Solid Geometry Two Problems from the 1989 Indian Olympiad A Gem from Combinatorics Two Problems from the 1989 Asian Pacific Olympiad A Selection of Joseph Liouville's Amazing Identities Concerning the Arithmetic Functions